A wrestler has a mass of 102 kg. On the Moon where g is 1.62 ms2. What is his mass?

His MASS is the same on earth and on the moon; it is 102 kg. His WEIGHT is different but mass is the same. On the moon he weighs 102 x 1.62 = 165 Newtons; on earth he weighs 102 x 9.81 = 1000 Newtons